Sarala Devi,K; Dr.Unnithan, R V(Cochin University of Science And Technology, November , 1986)
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Abstract:
Cochin backwaters, a tropical barbuilt estuary is well known for its prawn,
molluscan and demersal fisheries. Also it formed the dumping area for sewage,235
retting of husks and discharge of effluents from industries located on either side
of it. As a result the fishery is being gradually dwindled year after year due to
the lowering of the water quality. The effect of industrial polution on the benthic
community of this tropical estuary was worked out. An area extending over 21
km from the mouth of the estuary to upstream of industrial belt was selected.
Temporal and spatial variations of 16 environmental parameters at 9 stations
along the area were monitored monthly during 1981. Benthic fauna of these 9
stations consisted of amphipods , polychaetes, isopods, tanaidaceans, molluscs
and other crustaceans (Decapods, Acetes, Alpheids, Balanus, insect larvae,
chironomid larvae, cumacea and some fresh water forms ). Apart from these, sea
anemone, flat worms, nematodes, sipunculoids, echinoderms and fishes were
also encountered. 75 species belonging to 31 faunal groups were identified. Of
these 31 groups, amphipods, polychaedes, isopods, tanaidaceans and molluscs
were numerically abundant. Rest of the 26 groups (including 13 riverine forms)
were found less significant due to their rare occurrence/low numerical abundance.
Polychaetes and molluscs were the only major groups present at all the stations.
Description:
National Institute of Oceanography Regional Centre Cochin
Ponnachan,P T C; Paulose,C S; Panikkar, K R(Department of Biotechnology, April , 1993)
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Abstract:
Alloxan induced animal model was used to evaluate the potential antidiabetic effect of A . marmelose leaf
extract. The diabetic animals were given insulin injection and another group A . marmelose leaf extract orally.
It maintained the weight of the animals near to the control rats but a significant decrease in weight was noted it
diabetic animals without any treatment . The blood elucose level in 'treated animals were near to that of control
ones. Also a significantly increased glucose tolerance was observed in animals orally given the leaf extract
prior to the experiment . A significant decrease in liver glycogen ( 1.24 -.07 s!/ 100 g of wet tissue) was observed
in diabetic rats which was brought to almost the normal level (I.84- . 14 g; 100 g) with Icaf extract treatment.
Blood urea and serum cholesterol increased ( 62.66 - 3.50 and 192.67± 13.64 mg' dl) significantly in alloxxan
diabetic rats . The leaf extract treatment decreased the blood urea and serum . cholesterol (37.83 - 3.97 and
99?0±8.43 mg/dl ) to that of control ones . A similar effect was seen with insulin treatment . The results
indicate that the active principle in .4. marmelose leaf extract has similar hypoglycaemic activity to insulin
treatment.
Simon,Chiu; Paulose,C S; Ram,K Mishra(Department of Bio Technology, July 7, 1980)
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Abstract:
Effect of L-prolyl-cinagta tlheep spyo atenndt idaol paanmti-iPnaer/nkeinusroonleiapnti cp rreocpeeprttoiers b oifn dLi-npgrso.lyPl E-LP-TleIuDcEylS- g2l(y1c)Li n1-a0lem5u-ic1dy1el1-g,(Ply1Lc9iG8n1)a. mw-Taidhsee i nm(vPeeLcstGhiag) anotinesmd n ie onuf rb oaelchetapiovtinico -suuirnbadslu eacrnevddetnarflefetueeacrrtmto
a coephfnp ePtrmLe(2icGc0iaa, lob4 mnl0y io atndnhedevl sii8tn r0oto fem dndgosoi ppktyaag mm o-1fii nn tSeehCr/eng cteiwcau tfiracuolenle edpcptattiiioiclcny r r feienoscrp et ohfpinetvos erer ad ebtali.iyncAsdit)cienusdgit ge bin nyai dfrhimacaatli nonsttpilrseytirar aiatdtuttoimeolnn u(a3aso tmfde PidgfL f hkeGargel -o(n'p2tI0ieaPr ali)ldn.y odB ll ay4-b 0icne omldlneugtdc rk eabgdsy t - c1,aa pcSthoaCrmleo)ponfrsaicypil .heP TidLn hteGoe
pahnidn esp tior odpoepraimdoinl ew raesc aelpstoo ersx ainm tihnee dst.rPiaLtuGm s,elbeuctt ihvaedly n eon ehfafneccte don t h['eH a]ffsipniirtoyp oefr tidhoel sbpiencdifinicg .b Tinhdei nbge hoafv aigouonraislt an[3dH b] iaopcohmemori--
cal results obtained in the present study raise the possibility that PLG may facilitate nigro-striatal dopaminergic neurotransmission
through interacting with a unique PLG receptor functionally coupled to the dopamine receptor cyclase complex. -adenylate
Shenoy, S D; Joy, P A; Anantharaman, M R(Elsevier, February , 2004)
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Abstract:
Nanosized ZnFe2O4 particles containing traces of a-Fe2O3 by intent were produced by low temperature chemical
coprecipitation methods. These particles were subjected to high-energy ball milling. These were then characterised using
X-ray diffraction, magnetisation and dielectric studies. The effect of milling on zinc ferrite particles have been studied
with a view to ascertaining the anomalous behaviour of these materials in the nanoregime. X-ray diffraction and
magnetisation studies carried out show that these particles are associated with strains and it is the surface effects that
contribute to the magnetisation. Hematite percentage, probably due to decomposition of zinc ferrite, increases with
milling. Dielectric behaviour of these particles is due to interfacial polarisation as proposed by Koops. Also the defects
caused by the milling produce traps in the surface layer contributes to dielectric permittivity via spin polarised electron
tunnelling between grains. The ionic mechanism is enhanced in dielectrics with the rise in temperature which results in
the increase of dielectric permittivity with temperature.
Anantharaman, M R; Muhammad, Abdul Jamal E; Mohanan, P; Joy, P A; Philip, Kurian(Springer, May 29, 2009)
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Abstract:
Nickel–rubber nanocomposites were synthesized
by incorporating ferromagnetic nickel nanoparticles in a
natural rubber as well as neoprene rubber matrix. Complex
dielectric permittivity and magnetic permeability of
these composites were evaluated in the X-band microwave
frequencies at room temperature using cavity perturbation
technique. The dielectric loss in natural rubber is smaller
compared to neoprene rubber. A steady increase in the dielectric
permittivity is observed with increase in the content
of nickel in both the composites. The magnetic permeability
exhibits a steady decrease with increase in frequency and
magnetic loss shows a relaxation at 8 GHz. The suitability of
these composites as microwave absorbers is modeled based on the reflection loss which is dependant on the real and
imaginary components of the complex dielectric permittivity
and magnetic permeability.
One-pot acetalizations of cyclohexanone. acetophenone and benzophenone were carried out using methanol over H-montmorillonite clay
(a mesoporous material). silica, alumina, and different zeolites such as HFAU-Y.HBeta, H-ZSM-5, and H-mordenite. In all the cases a single
product-the corresponding dimethylacetal-was obtained in high yields. Hemiacetal formation was not observed with any catalyst. A
comparison of catalytic activity indicated that montmorillonite K-10 is the most active catalyst for the reaction. As evidenced by the reaction
time studies, the catalyst decay is greater over the zeolite catalyst than over the clay.
Anantharaman, M R; Vaidyanathan, G; Arulmurugan, R; Likhite, S D; Milind, Vaidya; Sendhilnathan, S; Senthilram, N D(NATL INST SCIENCE COMMUNICATION, December 12, 2003)
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Abstract:
Mixed ferrites belonging to the type Mn0.9Zn0.1Fe2O4 have been prepared by the double sintering method and by the
chemical co-precipitation for comparing their magnetic properties. Sintered and precipitated ferrites exhibit different
characteristics, especially in their magnetic properties like magnetization (Ms), coercive field (Hc) and Curie temperature
(Tc). The sintered particles were size reduced in order to compare with the nanosized co-precipitated particles. The effect of
grinding has also been studied. Particles have been collected at regular intervals of grinding and their properties have been
studied. The increase in the coercive field has been recorded by a hysteresis curve tracer confirming size reduction. X-ray
diffraction studies confirmed the structure and consequent size reduction
Description:
Indian Journal of Engineering & Materials Sciences
Vol. 11, August 2004, pp. 289-294
The effect of various processing parameters, such as nip gap, friction ratio
and roll temperature, on the tensile properties of short Kevlar aramid
fibre-thermoplastic polyurethane composite has been investigated and the tensile
and tear fracture surfaces have been characterised using a scanning electron microscope.
A nip gap of 0.45 mm, a friction ratio of 1.15 and a roll temperature of 62°C
was found to give optimum mechanical properties. Scanning electron microscopy
study revealed a higher extent of fibre orientation in the milling direction in the
above condition.
Paulose,C S; Dakshinamurti,K(Department of Biotechnology, December 19, 1984)
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Abstract:
The high-affinity bindings of [3H]-5-hydroxytryptamine to serotonin S-1 receptors,
[3H]-ketanserin to serotonin S-2 receptors in the cerebral cortex, [3H]-
fluphenazine to dopamine D-1 receptors, and [3H]-spiroperidol to dopamine D-2
receptors in the corpus striatum were studied in pyridoxine-deficient rats and
compared to pyridoxine-supplemented controls. There was a significant increase
in the maximal binding (Bmax) of serotonin S-1 and S-2 receptors with a significant
decrease in their binding affinities (Kd). However, there were no significant
changes either in the maximal binding or binding affinity of striatal dopamine D-
1 and D-2 receptors. Receptor sensitivity seems to correlate negatively with the
corresponding neurotransmitter concentrations in the pyridoxine-deficient rats.
Pyroja, S; Biju,M P; Paulose,C S(Department of Biotechnology, February 11, 1998)
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Abstract:
Effect of pyridoxine on growth, metabolism and cellular activity of
freshwater prawn Macrobrachiuni rosenbergii was studied. Postlarvae
(PL-10) of M. rosenbergii were fed with clam meat containing
various concentrations of pyridoxine. After 30 days RNA and DNA
of the abdominal tissues were estimated. Length, weight and RNA
to DNA ratio increased significantly with increasing concentrations
of pyridoxine. The effect of pyridoxine on the metabolic enzyme,
malate dehydrogenase, was also studied. Vmax showed a significant
decrease and the (Km) showed a significant increase in experimental
groups compared to control.
Jose, Joseph; Dr.Gopakumar, K(Cochin University Of Science And Technology, August 21, 1989)
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Abstract:
Frozen storage characteristics and shelflife vary
considerably among species as well as within the species
(Powrie, 1973; Fennema. 1973). This can be attributed to the
variation in the composition of fish among various species.
In certain species like sardines and mackerel. wide seasonal
variation in chemical composition occur within the species.
These variations affect the quality and shelflife. The
nutritional level of water. spawning, method of catching,
struggling etc. are found to have profound influence on the
condition of the fresh fish.
Soon after death the deteriorative changes in fish start
due to autolysis and bacterial growth. The rate of these
changes depends mainly on temperature. The handling methods
have great influence on bacterial contamination. Thus the type
oi'handling. temperature control. period of chill storage.
processing methods. type of freezing, condition of frozen
storage and period of storage affect the quality and shelflife
Of the fisho
In the present study extensive investigations were
carried out on various factors affecting the quality of fish
as well as their effect on the physical. chemical and sensory
qualities of fish during frozen storage and the shelflife
Description:
Central Institute Of Fisheries Technology,Cochin University Of Science And Technology
Siby, Zacharias; Dr. James, Manalel(Cochin University of Science and Technology, June , 2011)
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Abstract:
The study was an attempt to find out the effect of Sales Promotion,Price and Premium Promotion,on Consumer Based Brand Equity.The dimensions of consumer Based Brand Equity under study were Brand Awareness and Associations,Perceived Quality and Brand Loyalty.The Product categories under study were Convenience Products,shopping Products and Specialty Products and the product classes taken were Toothpastes,Colour Television and Athletic Shoes.The brands under study were Convenience Products-Anchor,Closeup,Colgate and Dabur:Shopping products-LG,Onida,Samsung and Sony and Specialty Products-Action,Adidas,Nike and Reebok.The primary objective of the study was to examine the effect of Sales Promotion,Price and Premium Promotion,on Consumer Based Brand Equity(CBBE)
Description:
School of Management Studies,Cochin University of Science and Technology
Litty, Irimpan; Deepthy, A; Bindu, Krishnan; Kukreja, L M; Nampoori, V P N; Radhakrishnan, P(Elsevier, 2008)
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Abstract:
In the present work, we report the third order nonlinear optical properties of ZnO thin films deposited using self assembly, sol gel process as well as pulsed laser ablation by z scan technique. ZnO thin films clearly exhibit a negative nonlinear index of refraction at 532 nm and the observed nonlinear refraction is attributed to two photon absorption followed by free carrier absorption. Although the absolute nonlinear values for these films are comparable, there is a change in the sign of the absorptive nonlinearity of the films. The films developed by dip coating and pulsed laser ablation exhibit reverse saturable absorption whereas the self assembled film exhibits saturable absorption. These different nonlinear characteristics in the self assembled films can be mainly attributed to the saturation of linear absorption of the ZnO defect states.
Sreeraj, M; Sumam, Mary Idicula(IEEE, December 7, 2012)
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Abstract:
The span of writer identification extends to broad
domes like digital rights administration, forensic expert decisionmaking
systems, and document analysis systems and so on. As the
success rate of a writer identification scheme is highly dependent
on the features extracted from the documents, the phase of
feature extraction and therefore selection is highly significant for
writer identification schemes. In this paper, the writer
identification in Malayalam language is sought for by utilizing
feature extraction technique such as Scale Invariant Features
Transform (SIFT).The schemes are tested on a test bed of 280
writers and performance evaluated
Chloroprene rubber was blended with whole tire reclaimed rubber
(WTR) in presence of different levels of a coupling agent Si69 [bis-
(3-(triethoxysilyl)propy1)tetrasuIfide] and the cure characteristics and
mechanical properties were studied. The rate and state of cure were
also affected by the coupling agent. While the cure time was increased,
the cure rate and scorch time were decreased with increasing silane
content. Tensile strength, tear strength, and abrasion resistance were
improved in the presence of coupling agent. Compression set and
resilience were adversely affected in presence of silane-coupling agent.Aging studies showed that the blends containing the coupling agent
were inferior to the unmodified blends.